KDE is a well-known desktop environment for the Unix-Like systems designed for users who wants to have a nice desktop environment for their machines, It is one of the most used desktop interfaces out there.


 Now install KDE Plasma 5.8.5 using following one single command in your system.
 first you run this command
 
1. sudo add-apt-repository ppa:kubuntu-ppa/backports

2.   sudo apt-get install kde-plasma-desktop


Please note during installation, it will ask you to configure sddm login manager, click OK and select the ‘lightdm’ login manager as default.


I hope that everything has worked fine, you can now enjoy KDE Plasma 5.8.5 on your desktop.




 example .
 if you have show any error enter this command
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu bionic Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EFDC8610341D9410
W: The repository 'http://repository.spotify.com stable InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'https://dl.winehq.org/wine-builds/ubuntu unstable Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/wine/wine-builds/ubuntu/dists/bionic/main/binary-amd64/Packages  404  Not Found
E: Failed to fetch https://dl.winehq.org/wine-builds/ubuntu/dists/unstable/main/binary-amd64/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

run this $ sudo apt-get update

Install KDE Plasma on Debian

$ sudo tasksel install kde-desktop

Install KDE Plasma On OpenSUSE

For OpenSUSE, latest version of KDE Plasma available from repository for your system using these commands as a root.
$ sudo zypper in -t pattern kde kde_plasma

Install KDE Plasma On Fedora 23-25

For Fedora systems, new KDE plasma updates are available from the default repositories, make sure to keep your Fedora installation up-to-date, in order to install most recent version of KDE Plasma as shown.
$ sudo dnf update
$ sudo dnf install @kde-desktop

Install KDE Plasma On RHEL/CentOS 7

# yum groupinstall "KDE Plasma Workspaces"
For Arch Linux, packages are available to download from the official extra repository, activate it and enjoy.


Install KDE Plasma On Ubuntu/Kubuntu 16.10/16.04 and Linux Mint 18
$ sudo add-apt-repository ppa:kubuntu-ppa/backports


 by sujeet kumar